Cadillac Repair: 1993 cadillac seville, 1993 cadillac seville, cadillac seville

Question
Heater blows cold air, I check behind glove box, rod moves fine. In heater mode, hose going into heater core is hot, hose coming out is not

Answer
If you are mechanicaly inclined or know of someone who is, You will need a DIGITAL VOLT/OHM METER, Simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information necessary to fix your vehicle.